Hi, I’m
Arjunasarathy Muralidharan
GUDUVANCHERY
Summary
Results-driven Backend Engineer with 4 years of experience in building and scaling microservices and distributed systems. Expertise in Java, TypeScript, Node.js, and Spring, with a focus on cloud-native architecture, event-driven services, and containerized deployments. Led engineering teams in migrating monoliths to microservices and implementing PCI-compliant payment integrations.
Overview
7
years of professional experience
Work History
Freelance
Software Developer / Consultant
11.2025 - Current
Job overview
- Developed microservice for video upload platform, enabling integration with video LLM rule engine and analytical system.
- Developed a Billing Application for a Kirana store to maintain inventory, generate billing invoices, and migrate legacy data into a new RDBMS system.
- Created billing application for kirana store, streamlining inventory management, invoicing, and migration of legacy data to new RDBMS.
- Implemented a consultant appointment booking site by integrating Calendly with a WordPress environment.
SurveySparrow
Senior Software Engineer
11.2023 - 10.2025
Job overview
- Led the migration of the subscription billing platform from a monolithic to a microservice architecture.
- Managed and mentored a team of 3 engineers delivering subscription and billing features for all registered organizations on the platform.
- Designed and built an end-to-end billing system for the Support Desk Platform (SparrowDesk), covering card capture, checkout, invoicing, and an in-product credit system.
- Built auto-subscription workflows, admin tooling for subscription management, and tenant-level metric and reporting systems.
- Mentored team of 3 engineers to deliver subscription and billing features for all registered organizations on platform, enhancing overall service quality.
- Developed auto-subscription workflows and admin tooling for subscription management, enabling streamlined tenant-level metrics and reporting.
PayPal
Software Engineer 2
05.2022 - 09.2023
Job overview
- Collaborated with Growth Markets cross-platform team to build country-specific payment services on PayPal's core payments infrastructure, ensuring compliance with local regulations.
- Developed file-based storage for recurring transaction card/payment credentials in Merchant SDK (Braintree) for Brazil Credential-on-File (COF) and added validation rules in ACE system with full functional test coverage.
- Designed and implemented protocol-level transaction-code propagation (Abecs Codes cost-reduction initiative) from acquirer (Rede) through PayPal, Braintree, and merchant systems to eliminate unnecessary retries and reduce scheme fees.
- Created anomaly-detection and email-alerting system for Brazil Receivables batch jobs, integrating FPTI event instrumentation and a Python service to consume Looker/BigQuery events.
Zoho Corporation
Software Engineer
08.2018 - 05.2022
Job overview
- Owned NLP engine layer on OpenNLP (tokenizing, chunking, POS tagging, parsing) for Zia Skills PaaS product, identified intent-detection algorithm flaws, and added regression cases to enhance accuracy.
- Designed and built internal admin tools using Spring MVC, Lyte, PostgreSQL, and Redis, overseeing development lifecycle through production monitoring to streamline operations.
- Led root-cause analysis for customer- and partner-reported issues, executed production database migrations, and upgraded NLP engine to new system with result-formatting for improved user experience.
ValleyPoint Technologies
Software Developer (Intern)
05.2018 - 08.2018
Job overview
- Developed Channel Manager backend with C#, LINQ, and SQL Server to automate e-commerce inventory and warehouse management for Amazon and eBay sellers.
- Built SMTP shipping-notification system to automate alerts for sellers.
- Collaborated with engineers to debug production issues and improve code reliability.
- Refactored legacy modules to strengthen maintainability and reduce technical debt.
Education
Jeppiaar Engineering CollegeChennai
Bachelor of Science from Computer Science & Engineering
04.2001
St. John's Sr. Sec. School (AISSCE)Chennai, India
High School Diploma
04.2001
Skills
Backend Frameworks: Spring, Spring-Batch, Tomcat, Nestjs, Expressjs, Nodejs, Inversify, NET (LINQ), FPTI
Architecture & Design: High-Level Design (HLD), Low-Level Design (LD), Microservices, Microservices migration,
API design
API integration
RESTful services
Object-oriented programming
Software architecture design
Testing and debugging
Quality assurance
Problem-solving
Payment processing
Timeline
Software Developer / Consultant
Freelance
11.2025 - Current
Senior Software Engineer
SurveySparrow
11.2023 - 10.2025
Software Engineer 2
PayPal
05.2022 - 09.2023
Software Engineer
Zoho Corporation
08.2018 - 05.2022
Software Developer (Intern)
ValleyPoint Technologies
05.2018 - 08.2018
Jeppiaar Engineering College
Bachelor of Science from Computer Science & Engineering
04.2001
St. John's Sr. Sec. School (AISSCE)
High School Diploma
04.2001